Brake-beam detector.



0. H. WILLIAMS; JB.. BRAKE BEAM DETECTOR. APPLICATION FILED JUNE 3, 1909.

Patented Au 10, 1909.

Lnvanbcpr: a. H. \Nllhamadn cii7f zwma AMY CHARLES H. WILLIAMS,

JR., OF CHICAGO, ILLINOIS, ASSIGNOR TO CHICAGO RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION.

BRAKE-BEAM DETECTOR.

To all whom it may concern: Be it known that I, CHARLES H. WILLIAMS, Jr., a citizen of the atv Chicago, Illinois, have invented a certain new and useful Improvement in Brake-Beam etectors, of which thefollowing is a full,

,. whlcl clear, and exact descri tion', such as Will enlable others skilled inthe art to Whichfit appertains to' make and use the same, reference'being had to the accompanying drawings, forming-part of this specification, in

Fir 1P6 1 is an end elevation of a trussed brake"bea1n, showing my improved detector applied thereto; Fig. 2 is p on the line 2-2 of Fig. 1; Fig. 3' is a section similar to Fig.f2, showing a modifiedform of the detector. H

My brake beams wherein a a tension member anda strut are combined, which compression member is cambered in order to obtain the necessary strength and rigidity.

In brake beams of the class above referred to, the camber is imparted to the com res sion memberduringthe assembling 0 the various parts of the beam by screwing up the nuts on the ends of the tension member, and 'it is the principal object of my invention to provide simple means on the beam which will serve as a detector to indicate any unauthorized tampering with the camber of the beam after the same has been finally adjusted, which tampering frequently takes place in attempts to take up or obtain slack inhanging the beams. With this object in view, I propose tO I H'OVIClQ. a key of frangible material, whiclr not only serves the purpose of a detector but which also acts as a nut lock when properly applied to the brake head and which detector keys must be broken and removed before the nuts can be removed from the tension member. It has heretofore been the practice in some instances to make use of a combined detector plate and nut lock in the form of a washer interposed between the nut and the outer face of the brake head, but. such construction has been found objectionable, in-

asmuch as it offers another joint which by.

reason of wear in time produces lost motion,

thereby materially affecting the camber in "the compression remedy these defects by locating a key in a member. I propose to Specification of Letters Patent.

United States, residing member,

a Vertical section.

invention relates generally to trussed compression member,

form of a key having driven through the is so positioned, the nut 4 Patented Aug. 10, 1909.

Application filed June 3, 1909. Serial No. $99,912.

perforated lug on the brake head, which keyfor-ms an effective detector and an eiiiv Referring-by numerals to the accompanying drawings, 1 designates the compression 2 the tension member, 3 the brake head located inthe usual manner upon the meeting ends of the compression and tension members, and 4 the nut located on the threaded end of the tension member and bearing against a corresponding seat 5 formed on the outer face of the brake head 3.

Formed integral with the outer portion of the brake head adjacent the opening through which the tension member passes is a lug 6 provided with a perforation 7, which latter is preferably curved and having one end 0c cupying an angle relative to the opposite en 8 designates the detector, which is formed of frangible material or material which will readily break upon being bent after having been bent initially, said detector beinginthe a tapered body portion provided on its larger end with a head 9.

After a brake beam nuts 4- are properly tightened on the ends of the tension men'1ber2, to impart the proper camber to the compression member each nut is turned so as to bring one of its side fat-es in alinenient with the inner edge of the per-'1 foration 7. One of the detectors is noiv perforation 7 and the projecting end of said detector is bent around the end of the nut 4 in its set posititnn When the detector I cannot be removed without bonding and therefore breaking the detector key, and thus any tampering with the camber of the beam will at once be detected.

The perforated lug (S can be located adjacent the inner edge of the brake head, as shown inl ig. 2, or adjacent the outer edge as shown in Fig. 3. The detector keys are preferably made of soft steel, or analogous material which will readily break upon at tempted remova after said keys have once been seated.

is assembled and th lug, as shown in l igii 2, thus ,firnily anchoring or fixing the deter; tor 1D the perforated lug and also locking the" perforation, of a combined detector and nut lock seated in said perforation and adapted to engage against the nut located on the end of the tension member, of the beam.

3. In a trussed brake beam, the combinawith the brake head provided with a curv'ed perforation, of

I a conibined detector and nut lock seated in said curved perforatioififind adapted to engage against the nut. located-l on the end of the tension member of the beam.

4. In a trussed brake beam, the combination with the brake head provided with alug havin acnrved erforation, of ajrangible key a apted to e inserted in said perforation, and a portion of which key engages against the nut located on the end of the tension member of the beam.

. 5. A detector for trussed brake beams, comprising a tapered body of frangible material, and a head formed on one end of said body.

G. A detector for trussed brake beams,

comprising a key tornied of .fran gibldmaterial, and a head formed on one end the'reo't 7 In a trussed brake beam, th combina tion with the brake head provided with a. key seat, of a detector of fran ible material anchored in said key seat, and the head of which detector engages against the nut located on the end of the compression member of the beam.

8. In a trussed brake beam, the conibina tion With the brake head provided wlth'a key seat, one end'of which occupies afpla'n at an angle relative to the plane oetitlpied by the opposite end of said seat, of a frangible. detector seated in said key seat, and one end of which detector bears against the nut located on the end of the tension member of the beam.

9. A detector for brake beams, comprising a key of frangible material ada ted to. be anchored in a seat formed in the irake head of the beam, and a projecting ortion of which keybears against the nut ocated on the compression member of the beam.

In testimony "whereof I hereunto affix inyh signature in the presence of twoovitnesses, this 26th tin; of May, 1909.

, CHARLES H. \VILLIdMS, JR.

Witnesses E. T. WALKER, 

